Introduction to Principal Components Analysis
Date
1999
Authors
Francis, Paul
Wills, Beverly J.
Journal Title
Journal ISSN
Volume Title
Publisher
Astronomical Society of the Pacific
Abstract
Understanding the inverse equivalent width - luminosity relationship (Baldwin Effect), the topic of this meeting, requires extracting information on continuum and emission line parameters from samples of AGN. We wish to discover whether, and how, different subsets of measured parameters may correlate with each other. This general problem is the domain of Principal Components Analysis (PCA). We discuss the purpose, principles, and the interpretation of PCA, using some examples from QSO spectroscopy. The hope is that identification of relationships among subsets of correlated variables may lead to new physical insight.
Description
Keywords
Citation
Collections
Source
ASP Conference Series
Type
Conference paper
Book Title
Quasars and Cosmology, ASP Conference Series 162
Entity type
Access Statement
Open Access